Centres, drills and de-burrs thin sheet metal in one operation. Manufactured from HSS with a Titanium Nitride cotaing for long lasting performance. Dual flute construction for reduced drilling pressure, faster drilling and longer tool life. Self starting tip. Cuts hole sizes: 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 & 32mm.